Basically you are free to submit your own stuff, and other people are free to not up-vote it if they don't like it. Of course, if you self-submit a bunch of yo

Basically you are free to submit your own stuff, and other people are free to not up-vote it if they don't like it. Of course, if you self-submit a bunch of your stuff and no one up-votes it then you will lower your karma average, which also lowers the worth of your vote when your up-vote or down-vote. It is best to try to keep your karma average as high as possible.